Thankfully this only affects systems with one specific south bridge
and is most probably harmless unless the hwmon module is heavily
cycled.
Signed-off-by: Jean Delvare <khali@xxxxxxxxxxxx>
---
drivers/hwmon/hwmon.c | 24 +++++++++++++-----------
1 file changed, 13 insertions(+), 11 deletions(-)
--- linux-3.7-rc5.orig/drivers/hwmon/hwmon.c 2012-10-20 21:11:32.000000000 +0200
+++ linux-3.7-rc5/drivers/hwmon/hwmon.c 2012-11-13 15:58:58.474223517 +0100
@@ -84,19 +84,21 @@ static void __init hwmon_pci_quirks(void
/* Open access to 0x295-0x296 on MSI MS-7031 */
sb = pci_get_device(PCI_VENDOR_ID_ATI, 0x436c, NULL);
- if (sb &&
- (sb->subsystem_vendor == 0x1462 && /* MSI */
- sb->subsystem_device == 0x0031)) { /* MS-7031 */
-
- pci_read_config_byte(sb, 0x48, &enable);
- pci_read_config_word(sb, 0x64, &base);
+ if (sb) {
+ if (sb->subsystem_vendor == 0x1462 && /* MSI */
+ sb->subsystem_device == 0x0031) { /* MS-7031 */
+ pci_read_config_byte(sb, 0x48, &enable);
+ pci_read_config_word(sb, 0x64, &base);
- if (base == 0 && !(enable & BIT(2))) {
- dev_info(&sb->dev,
- "Opening wide generic port at 0x295\n");
- pci_write_config_word(sb, 0x64, 0x295);
- pci_write_config_byte(sb, 0x48, enable | BIT(2));
+ if (base == 0 && !(enable & BIT(2))) {
+ dev_info(&sb->dev,
+ "Opening wide generic port at 0x295\n");
+ pci_write_config_word(sb, 0x64, 0x295);
+ pci_write_config_byte(sb, 0x48,
+ enable | BIT(2));
+ }
}
+ pci_dev_put(sb);
}
#endif
}
--
Jean Delvare
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